Commit Graph

11810 Commits

Author SHA1 Message Date
Evan Cheng
1cc3984148 Allow targets more controls on what nodes are scheduled by reg pressure, what for latency in hybrid mode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104293 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20 23:26:43 +00:00
Devang Patel
6ed0ce3240 Rename variable. add comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104274 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20 20:35:24 +00:00
Daniel Dunbar
4072886a69 tblgen/Target: Add a isAsmParserOnly bit, and teach the disassembler to honor
it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104270 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20 20:20:32 +00:00
Evan Cheng
15a16def6e Add a hybrid bottom up scheduler that reduce register usage while avoiding
pipeline stall. It's useful for targets like ARM cortex-a8. NEON has a lot
of long latency instructions so a strict register pressure reduction
scheduler does not work well.
Early experiments show this speeds up some NEON loops by over 30%.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104216 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20 06:13:19 +00:00
Eric Christopher
51f5d6af8c Fix build by actually declaring the variable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104201 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20 00:59:30 +00:00
Eric Christopher
c1a887d76d Partial code for emitting thread local bss data.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104197 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20 00:49:07 +00:00
Jim Grosbach
309d20c89c Fix the post-RA instruction scheduler to handle instructions referenced by
more than one dbg_value instruction. rdar://7759363


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104174 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-19 22:57:06 +00:00
Jakob Stoklund Olesen
7ebc4d63db Add MachineInstr::readsVirtualRegister() in preparation for proper handling of
partial redefines.

We are going to treat a partial redefine of a virtual register as a
read-modify-write:

  %reg1024:6 = OP

Unless the register is fully clobbered:

  %reg1024:6 = OP, %reg1024<imp-def>

MachineInstr::readsVirtualRegister() knows the difference. The first case is a
read, the second isn't.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104149 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-19 20:36:22 +00:00
Evan Cheng
211ffa1351 Code refactoring: pull SchedPreference enum from TargetLowering.h to TargetMachine.h and put it in its own namespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104147 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-19 20:19:50 +00:00
mike-m
eb75870206 Fix enum to address array bounds regression.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104058 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-18 21:22:12 +00:00
Eric Christopher
4d01cbe93b Make EmitTBSSSymbol take a section argument so that we can find it later.
Fix up callers and users.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104057 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-18 21:16:04 +00:00
Kevin Enderby
ebe7fcd041 Added support in MC for Directional Local Labels.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103989 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-17 23:08:19 +00:00
Eric Christopher
c6177a4531 More data/parsing support for tls directives. Add a few more testcases
and cleanup comments as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103985 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-17 22:53:55 +00:00
Daniel Dunbar
9a744e3860 MC: Add dyn_cast support to MCSection.
- Of questionable utility, since in general anything which wants to do this should probably be within a target specific hook, which can rely on the sections being of the appropriate type. However, it can be useful for short term hacks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103980 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-17 21:54:26 +00:00
Eric Christopher
423c9e3e58 Add some section and constant support for darwin TLS.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103974 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-17 21:02:07 +00:00
Jakob Stoklund Olesen
b843d9f833 Optimize empty DenseMap iteration.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103962 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-17 20:01:24 +00:00
Daniel Dunbar
525a3a67c1 llvm-mc: Support reassignment of variables in one special case, when the
variable has not yet been used in an expression. This allows us to support a few
cases that show up in real code (mostly because gcc generates it for Objective-C
on Darwin), without giving up a reasonable semantic model for assignment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103950 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-17 17:46:23 +00:00
Zhongxing Xu
bae5210321 Remove unused member variable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103936 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-17 09:47:55 +00:00
Anton Korobeynikov
ded05e34b6 Add support for thiscall calling convention.
Patch by Charles Davis and Steven Watanabe!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103902 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-16 09:08:45 +00:00
Chris Lattner
4c297c9153 improve portability to systems that don't have round, patch by
Evzen Muller!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103877 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-15 17:11:55 +00:00
Jakob Stoklund Olesen
c66c78c684 Add reg_nodbg_iterator
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103856 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-15 02:52:58 +00:00
Evan Cheng
06b666c705 Allow TargetLowering::getRegClassFor() to be called on illegal types. Also
allow target to override it in order to map register classes to illegal
but synthesizable types. e.g. v4i64, v8i64 for ARM / NEON.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103854 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-15 02:18:07 +00:00
Evan Cheng
b990a2f249 Teach two-address pass to do some coalescing while eliminating REG_SEQUENCE
instructions.

e.g.
%reg1026<def> = VLDMQ %reg1025<kill>, 260, pred:14, pred:%reg0
%reg1027<def> = EXTRACT_SUBREG %reg1026, 6
%reg1028<def> = EXTRACT_SUBREG %reg1026<kill>, 5
...
%reg1029<def> = REG_SEQUENCE %reg1028<kill>, 5, %reg1027<kill>, 6, %reg1028, 7, %reg1027, 8, %reg1028, 9, %reg1027, 10, %reg1030<kill>, 11, %reg1032<kill>, 12

After REG_SEQUENCE is eliminated, we are left with:

%reg1026<def> = VLDMQ %reg1025<kill>, 260, pred:14, pred:%reg0
%reg1029:6<def> = EXTRACT_SUBREG %reg1026, 6
%reg1029:5<def> = EXTRACT_SUBREG %reg1026<kill>, 5

The regular coalescer will not be able to coalesce reg1026 and reg1029 because it doesn't
know how to combine sub-register indices 5 and 6. Now 2-address pass will consult the
target whether sub-registers 5 and 6 of reg1026 can be combined to into a larger
sub-register (or combined to be reg1026 itself as is the case here). If it is possible, 
it will be able to replace references of reg1026 with reg1029 + the larger sub-register
index.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103835 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14 23:21:14 +00:00
Dan Gohman
fd72617688 Add some comments about undef.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103834 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14 23:01:02 +00:00
Bill Wendling
b92187a410 Rename "HasCalls" in MachineFrameInfo to "AdjustsStack" to better describe what
the variable actually tracks.

N.B., several back-ends are using "HasCalls" as being synonymous for something
that adjusts the stack. This isn't 100% correct and should be looked into.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103802 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14 21:14:32 +00:00
Devang Patel
98e1cac52c Add support to preserve type info for the variables that are removed by the optimizer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103798 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14 21:01:35 +00:00
Dan Gohman
8090e214f7 Use PassManagerBase, to give clients the option of using either
FunctionPassManager or regular PassManager.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103773 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14 15:35:10 +00:00
Dan Gohman
89938ce0ad Add an isNodeHidden to the graph traits, to support definition of
subgraph views.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103772 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14 15:29:31 +00:00
Evan Cheng
0ebf356ddf Get rid of the bit twiddling to read / set OpActions and ValueTypeActions. The small saving in memory isn't worth the increase in runtime and code complexity in my opinion.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103768 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14 07:37:40 +00:00
Eric Christopher
482eba054a Add AsmParser support for darwin tbss directive.
Nothing uses this yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103757 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14 01:50:28 +00:00
Nick Lewycky
3fa0c8ca96 Fix typo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103755 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14 01:02:48 +00:00
Daniel Dunbar
47b3ec4daa MC: Switch to completely lazy layout.
- The eliminates the last major algorithmic problem with MC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103754 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14 00:51:14 +00:00
Daniel Dunbar
9005d45a99 MC: Extend MCAsmLayout to explicitly track which fragments have been layed out, and enforce several invariants to LayoutFragment to ensure we only do layout in a sensible order.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103753 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14 00:37:21 +00:00
Daniel Dunbar
337718e09c MC: Switch MCFragment to storing the layout order index, not its index in the file.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103751 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14 00:37:14 +00:00
Daniel Dunbar
afc6acdab7 MC: Change LayoutSection() to only do the section initializiation.
Also, elimminate MCAsmLayout::set*, which are no longer needed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103750 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14 00:37:11 +00:00
Evan Cheng
dbf67fefea Adding a v8i64 512-bit vector type. This will be used to model ARM NEON intrinsics which translate into a pair of vld / vst instructions that can load / store 8 consecutive 64-bit (D) registers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103746 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-13 23:55:47 +00:00
Evan Cheng
b9c0e332b3 Eliminate use of magic numbers to access OpActions. It also has the effect of allowing more than 31 scalar value types. MAX_ALLOWED_VALUETYPE had already been updated to 64 a while back.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103743 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-13 23:25:21 +00:00
Evan Cheng
b21f5a5511 Fix up LoadExtActions, TruncStoreActions, and IndexedModeActions representation and setter and getter's so they will continue to work if the number of scalar ValueType's exceeds 31.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103742 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-13 23:01:26 +00:00
Daniel Dunbar
b69fc044db MC: Move Layout{Fragment,Section} into MCAsmLayout, and add LayoutFile().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103738 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-13 20:40:12 +00:00
Dan Gohman
e6cd757e68 Teach MachineLICM and MachineSink how to clear kill flags conservatively
when they move instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103737 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-13 20:34:42 +00:00
Evan Cheng
1e5a6c46b8 80 col violation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103733 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-13 20:14:58 +00:00
Dan Gohman
49b4589978 Add a utility function for conservatively clearing kill flags, and make
use of it in MachineCSE.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103726 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-13 19:24:00 +00:00
Daniel Dunbar
2c18d3b0fe MC: Factor out MCAssembler::ComputeFragmentSize.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103724 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-13 18:35:06 +00:00
Daniel Dunbar
f1fd2288f3 Fix const ilist_node::get{Prev,Next}Node() to actually compile. Picky, picky.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103723 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-13 18:35:02 +00:00
Daniel Dunbar
f60c736c64 MC: Add section layout order indices to MCSectionData.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103715 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-13 15:17:26 +00:00
Daniel Dunbar
aa0d350fe5 MC: Add MCAsmLayout::FragmentReplaced() helper function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103709 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-13 08:43:31 +00:00
Daniel Dunbar
2661f11e46 MC: Eliminate MCSectionData::{,Address,File}Size, which can now be computed by
utility functions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103695 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-13 03:19:50 +00:00
Daniel Dunbar
456b501270 MC: Add MCAlignFragment::OnlyAlignAddress bit. This is a bit of magic that says the align fragment shouldn't contribute to the logical section size, it is will be used for cleaning up the code to handle section alignment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103690 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-13 01:10:26 +00:00
Daniel Dunbar
b5844ff1c4 MC: Add MCSectionData::AddressSize, which is the size of the address space consumed by the section. This can differ from both the section logical size, and the section size on disk (although the current code handles this without making an explicit distinction).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103689 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-13 01:10:22 +00:00
Daniel Dunbar
1c15413ebc MC: Move MCAlignFragment::EmitNops value out of the constructor.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103665 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-12 22:56:23 +00:00